Published: September 3, 2025
With the Proofreader API, you can provide grammar and style corrections, quickly and privately, client-side. Sign up for the Proofreader API origin trial to use the Proofreader API on your websites and web applications with real users. The origin trial is available from Chrome 141 to Chrome 145.
If you're new to origin trials, these are time-limited programs open to all developers, offering early access to experimental platform features. While there might be usage limits, developers can integrate these features for live testing, gathering user feedback, with the goal of informing iterations towards a full launch.
Use the Proofreader API
The Proofreader API is a text-based API that returns proofreading suggestions in JSON format. There are a number of possible use cases for this API, including:
- Provide proofreading capabilities in a word processor.
- Build a Chrome Extension to correct emails before sending them in a mail application.
Share your feedback
We look forward to hearing your feedback on the Proofreader API.
- You can share your feedback on the API shape by commenting on an existing issue or by opening a new one in the Proofreader API GitHub repository.
- For feedback on Chrome's implementation, file a Chromium bug.